Viswanathan K's Thoughts

Simulating the world. Or a particular scenario. The ability to do this has enormous evolutionary benefits. To understand why, consider a creature which cannot simulate any aspect, writes Max Bennett in A Brief History of Intelligence . How would it learn anything? By trial and error. Costly in energy and time, let alone the risk angle.   But a creature which can simulate decently or better, well, it learns by “ vicarious trial and error” . Imagining what would happen with a choice rather than actually making that choice. So much more efficient and quicker.   A related aspect is counterfactual learning , i.e., imagining how things would have played out if a different choice had been made. Sadly, in humans at least, this ability has a side-effect we are all familiar with: regret . “We cannot change the past, so why torture ourselves with it?” Because it is an evolutionary habit that made sense for most of human history. For most of our species’ existence: “Such r...

Richard Feynman famously said: “You can know the name of a bird in all the languages of the world, but when you're finished, you'll know absolutely nothing whatever about the bird... So let's look at the bird and see what it's doing — that's what counts. I learned very early the difference between knowing the name of something and knowing something.”   We are all familiar with that problem. Sometimes people use fancy terms to impress other. But far more often, what people are really doing is using the jargon of their field, as Seth Godin points out : “If it’s important, conceptual or frequently discussed, there’s probably a domain-based word that experts understand. The precision of a special vocabulary allows them to do better work.”   Godin agrees with Feynman in that knowing the jargon doesn’t necessarily mean one is an expert in that domain. On the other hand: “If someone doesn’t know the word for it, it might be worth investigating what else they ...

Dignity. There is that (in)famous incident of Gandhi being thrown out from the first-class carriage of a train in South Africa. It led Gandhi to write that Indians had “become the untouchables of South Africa”, says Aakash Singh Rathore in Ambedkar’s Preamble .   It took a “real” untouchable, Ambedkar, to point out that the discrimination Indians faced abroad, while routine and condemnable, was a false analogy to what the untouchables faced in India. After all, pointed out Ambedkar, in South Africa, Gandhi was the boss of several white employees. He had whites as house guests, he dined with white South Africans, he owned property and handled significant amounts of money. Contrast that with what untouchables experienced and suffered back home, pointed out Ambedkar. Hence the charge of the false analogy. As Rathore says: “Only a visa got Dr Ambedkar out of this hostile land that was his homeland, so he could travel abroad, far from the dominion of Brahmanism, and only then enj...

Conditional reflexes. It is what an animal learns by repeated exposure. If a bell rings, then food is served, the dog will (over time) start salivating when the bell rings. Even before the food is served. What is strange is that such conditional learning does not need a brain. It even happens in creatures without brains. Brain or no brain, such learning is called acquired learning .   Say, you now start ringing the bell but don’t serve the food afterwards. For just a few days. As expected, over time, the animal will stop salivating when the bell rings. The association has been removed, a process called extinction . After those few days, you re-establish the bell-food sequence. The animal will start salivating again, a process called spontaneous recovery . Turns out the association was supressed , not deleted .   Next, you break the bell-food for a long time. Then after that long period, you restart the bell-food sequence. The animal will start salivating again. The s...

A couple of years back, China banned all coaching centers. The reason was exactly what many in India complain about – the competition to get into the best colleges is fierce, thus the rise of those coaching centers. But those centers are hard to afford to many plus they are only in the bigger cities. That means the kids of the already well off, urban folks are the only ones with a real shot of making it to the best colleges and then to better economic prospects.   While that reasoning makes sense, China (like India) has another problem, as this article explains . The quality of education in schools is not good. And their education too is exam oriented, not concept oriented. Teachers are gauged based on exam results, so they are incentivized to teach to the test (and in poorer areas, to cheat). The quality of education isn’t the same everywhere – the richer provinces do much better . Kids in the poorer provinces drop out of education much earlier. The per capita teacher count is...

Even before the ink was dry on the Constitution, Ambedkar worried whether the Constitution would survive. To make it stick, to make it impossible to subvert and overthrow, he believed “constitutional morality” had to take root, writes Aakash Singh Rathore in Ambedkar’s Preamble . In his famous appeal on that topic, Ambedkar cautioned: “Constitutional morality is not a natural sentiment. It has to be cultivated. We must realize our people have yet to learn it. Democracy in India is only a top-dressing on an Indian soil, which is essentially undemocratic.” That last part was a shot at the caste system. The democratic principle was equality, whereas the social principle was graded inequality. The former stood for liberty, the latter for fixed occupation.   Constitutional morality was a call to the public officials and public servants to, as Rathore puts it, “transcend the values and principles that they had been imbued with in Indian social life, and adopt the values and princ...